NWN

SEC source: 0001733998-23-000026 · form4.xml · nonDerivative · entry 1

PARTAIN NATHAN I · CIK 0001180965 · Director

10b5-1 filing: Plan reported

Ownership: Indirect · See Footnote

Disclosed balance after: 2,868.419

F1 · kind: The reported transaction was effected pursuant to a written election under the NW Natural Deferred Compensation Plan made on or about January 14, 2021 which election constitutes a Rule 10b5-1 trading plan.

F2 · ownership.nature: Shares have been credited to reporting person's account under the NW Natural Deferred Compensation Plan.

SEC source: 0001733998-23-000024 · form4.xml · nonDerivative · entry 1

McDonough Sandra · CIK 0001901349 · Director

10b5-1 filing: Plan reported

Ownership: Indirect · See Footnote

Disclosed balance after: 2,786.972

F1 · kind: The reported transaction was effected pursuant to a written election under the NW Natural Deferred Compensation Plan made on or about January 6, 2022 which election constitutes a Rule 10b5-1 trading plan.

F2 · ownership.nature: Shares have been credited to reporting person's account under the NW Natural Deferred Compensation Plan.

SEC source: 0001733998-23-000020 · form4.xml · nonDerivative · entry 1

Lee Karen · CIK 0001839510 · Director

10b5-1 filing: Plan reported

Ownership: Indirect · See Footnote

Disclosed balance after: 6,853.305

F1 · kind: The reported transaction was effected pursuant to a written election under the NW Natural Deferred Compensation Plan made on or about June 1, 2021 which election constitutes a Rule 10b5-1 trading plan.

F2 · ownership.nature: Shares have been credited to reporting person's account under the NW Natural Deferred Compensation Plan.

SEC source: 0001733998-23-000018 · form4.xml · nonDerivative · entry 1

Enand Monica · CIK 0001794296 · Director

10b5-1 filing: Plan reported

Ownership: Indirect · See Footnote

Disclosed balance after: 10,561.221

F1 · kind: The reported transaction was effected pursuant to a written election under the NW Natural Deferred Compensation Plan made on or about June 28, 2022 which election constitutes a Rule 10b5-1 trading plan.

F2 · ownership.nature: Shares have been credited to reporting person's account under the NW Natural Deferred Compensation Plan.

SEC source: 0001567619-23-004405 · doc1.xml · nonDerivative · entry 2

DOWNING JAMES R · CIK 0001717381 · VP, CIO · NW Natural

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 7,120.569

F2 · shares: Shares were withheld by the issuer to cover withholding taxes on issuance of performance shares. Organization and Executive Compensation Committee certification of the payout of these performance shares was reported on Form 4 filed on February 24, 2023.

SEC source: 0001567619-23-004405 · doc1.xml · nonDerivative · entry 1

DOWNING JAMES R · CIK 0001717381 · VP, CIO · NW Natural

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 7,617.569

F1 · shares: Shares were withheld by the issuer to cover withholding taxes on issuance of shares due to vesting of restricted stock units (RSUs) with performance threshold. Organization and Executive Compensation Committee certification of satisfaction of the performance threshold was reported on Form 4 filed on February 24, 2023.

SEC source: 0001567619-23-004412 · doc1.xml · nonDerivative · entry 2

Palfreyman Justin · CIK 0001686243 · VP Strategy & Bus. Dev · NW Natural

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 9,469

F2 · shares: Shares were withheld by the issuer to cover withholding taxes on issuance of performance shares. Organization and Executive Compensation Committee certification of the payout of these performance shares was reported on Form 4 filed on February 24, 2023.

SEC source: 0001567619-23-004412 · doc1.xml · nonDerivative · entry 1

Palfreyman Justin · CIK 0001686243 · VP Strategy & Bus. Dev · NW Natural

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 10,034

F1 · shares: Shares were withheld by the issuer to cover withholding taxes on issuance of shares due to vesting of restricted stock units. Organization and Executive Compensation Committee certification of satisfaction of the performance threshold and vesting for these restricted stock units was reported on Form 4 filed on February 24, 2023.

SEC source: 0001567619-23-004418 · doc1.xml · nonDerivative · entry 2

Saathoff MardiLyn · CIK 0001445672 · SVP, General Counsel & Reg

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 21,064.1235

F2 · shares: Shares were withheld by the issuer to cover withholding taxes on issuance of performance shares. Organization and Executive Compensation Committee certification of the payout of these performance shares was reported on Form 4 filed on February 24, 2023.

SEC source: 0001567619-23-004418 · doc1.xml · nonDerivative · entry 1

Saathoff MardiLyn · CIK 0001445672 · SVP, General Counsel & Reg

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 21,233.1235

F1 · shares: Shares were withheld by the issuer to cover withholding taxes on issuance of shares due to vesting of restricted stock units. Organization and Executive Compensation Committee certification of satisfaction of the performance threshold and vesting for these restricted stock units was reported on Form 4 filed on February 24, 2023.

SEC source: 0001567619-23-004399 · doc1.xml · nonDerivative · entry 2

ANDERSON DAVID HUGO · CIK 0001241405 · Director · President & CEO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 136,765

F2 · shares: Shares were withheld by the issuer to cover withholding taxes on issuance of performance shares. Organization and Executive Compensation Committee certification of the payout of these performance shares was reported on Form 4 filed on February 24, 2023.

SEC source: 0001567619-23-004399 · doc1.xml · nonDerivative · entry 1

ANDERSON DAVID HUGO · CIK 0001241405 · Director · President & CEO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 140,439

F1 · shares: Shares were withheld by the issuer to cover withholding taxes on issuance of shares due to vesting of restricted stock units. Organization and Executive Compensation Committee certification of satisfaction of the performance threshold and vesting for these restricted stock units was reported on Form 4 filed on February 24, 2023.

SEC source: 0001567619-23-004420 · doc1.xml · nonDerivative · entry 2

Weber David A. · CIK 0001538965 · VP, Gas Supply · NW Natural

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 1,094.733

F2 · shares: Shares were withheld by the issuer to cover withholding taxes on issuance of performance shares. Organization and Compensation Committee certification of the payout of these performance shares was reported on Form 4 filed on February 24, 2023.

SEC source: 0001567619-23-004420 · doc1.xml · nonDerivative · entry 1

Weber David A. · CIK 0001538965 · VP, Gas Supply · NW Natural

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 1,480.733

F1 · shares: Shares were withheld by the issuer to cover withholding taxes on issuance of shares due to vesting of restricted stock units. Organization and Executive Compensation Committee certification of satisfaction of the performance threshold and vesting for these restricted stock units was reported on Form 4 filed February 24, 2023.

SEC source: 0001567619-23-004426 · doc1.xml · nonDerivative · entry 2

WILSON BRODY J · CIK 0001571275 · VP, Treas., CAO & Controller

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 7,138

F2 · shares: Shares were withheld by the issuer to cover withholding taxes on issuance of performance shares. Organization and Executive Compensation Committee certification of the payout of these performance shares was reported on Form 4 filed on February 24, 2023.

SEC source: 0001567619-23-004426 · doc1.xml · nonDerivative · entry 1

WILSON BRODY J · CIK 0001571275 · VP, Treas., CAO & Controller

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 7,524

F1 · shares: Shares were withheld by the issuer to cover withholding taxes on issuance of shares due to vesting of restricted stock units. Organization and Executive Compensation Committee certification of satisfaction of the performance threshold and vesting for these restricted stock units was reported on Form 4 filed on February 24, 2023.

SEC source: 0001567619-23-004408 · doc1.xml · nonDerivative · entry 1

Filippi Shawn M · CIK 0001629792 · VP, CCO & Corporate Secretary

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 1,741.5708

F1 · shares: Shares were withheld by the issuer to cover withholding taxes on issuance of shares due to vesting of restricted stock units. Organization and Executive Compensation Committee certification of satisfaction of the performance threshold and vesting for these restricted stock units was reported on Form 4 filed on February 24, 2023.

SEC source: 0001567619-23-004416 · doc1.xml · nonDerivative · entry 2

RUSH KIMBERLY HEITING · CIK 0001629836 · SVP, Operations & CMO · NW Natural

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 15,343.1722

F2 · shares: Shares were withheld by the issuer to cover withholding taxes on issuance of performance shares. Organization and Executive Compensation Committee certification of the payout of these performance shares was reported on Form 4 filed on February 24, 2023.

SEC source: 0001567619-23-004416 · doc1.xml · nonDerivative · entry 1

RUSH KIMBERLY HEITING · CIK 0001629836 · SVP, Operations & CMO · NW Natural

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 16,329.1722

F1 · shares: Shares were withheld by the issuer to cover withholding taxes on issuance of shares due to vesting of restricted stock units. Organization and Executive Compensation Committee certification of satisfaction of the performance threshold and vesting for these restricted stock units was reported on Form 4 filed on February 24, 2023.

SEC source: 0001567619-23-004402 · doc1.xml · nonDerivative · entry 2

Burkhartsmeyer Frank · CIK 0001661934 · SVP & Chief Financial Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 23,139.402

F2 · shares: Shares were withheld by the issuer to cover withholding taxes on issuance of performance shares. Organization and Executive Compensation Committee certification of the payout of these performance shares was reported on Form 4 filed on February 24, 2023.

SEC source: 0001567619-23-004402 · doc1.xml · nonDerivative · entry 1

Burkhartsmeyer Frank · CIK 0001661934 · SVP & Chief Financial Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 25,259.402

F1 · shares: Shares were withheld by the issuer to cover withholding taxes on issuance of shares due to vesting of restricted stock units. Organization and Executive Compensation Committee certification of satisfaction of the performance threshold and vesting for these restricted stock units was reported on Form 4 filed on February 24, 2023.

SEC source: 0001567619-23-004424 · doc1.xml · nonDerivative · entry 2

Williams Kathryn M · CIK 0001772924 · VP, PA & Sustainability · NW Natural

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 3,778

F3 · shares: Shares were withheld by the issuer to cover withholding taxes on issuance of performance shares. Organization and Executive Compensation Committee certification of the payout of these performance shares was reported on Form 4 filed on February 24, 2023.

F2 · balance_after: Includes 1,542 time-based RSUs granted under issuer's Long Term Incentive Plan. The RSUs vest in two installments: 514 shares on March 1, 2024, and 1,028 shares on March 1, 2025.

SEC source: 0001567619-23-004424 · doc1.xml · nonDerivative · entry 1

Williams Kathryn M · CIK 0001772924 · VP, PA & Sustainability · NW Natural

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 4,077

F1 · shares: Shares were withheld by the issuer to cover withholding taxes on issuance of shares due to vesting of 702 restricted stock units (RSUs) with performance threshold and vesting of 514 time-based RSUs. Organization and Executive Compensation Committee certification of satisfaction of the performance threshold and vesting for the 702 RSUs was reported on Form 4 filed on February 24, 2023. The 514 time-based RSUs are part of 2,056 time-based RSUs that have been reported as shares beneficially owned by the reporting person since initially reported on the reporting person's Form 4A on May 22, 2020.

F2 · balance_after: Includes 1,542 time-based RSUs granted under issuer's Long Term Incentive Plan. The RSUs vest in two installments: 514 shares on March 1, 2024, and 1,028 shares on March 1, 2025.

SEC source: 0001567619-23-004423 · doc1.xml · nonDerivative · entry 2

Williams Kathryn M · CIK 0001772924 · VP, PA & Sustainability · NW Natural

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 3,778

F3 · shares: Shares were withheld by the issuer to cover withholding taxes on issuance of performance shares. Organization and Executive Compensation Committee certification of the payout of these performance shares was reported on Form 4 filed on February 24, 2023.

F2 · balance_after: Includes 1,542 time-based RSUs granted under issuer's Long Term Incentive Plan. The RSUs vest in two installments: 514 shares on March 1, 2024, and 1,028 shares on March 1, 2025.

SEC source: 0001567619-23-004423 · doc1.xml · nonDerivative · entry 1

Williams Kathryn M · CIK 0001772924 · VP, PA & Sustainability · NW Natural

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 4,077

F1 · shares: Shares were withheld by the issuer to cover withholding taxes on issuance of shares due to vesting of 702 restricted stock units (RSUs) with performance threshold and vesting of 514 time-based RSUs. Organization and Executive Compensation Committee certification of satisfaction of the performance threshold and vesting for the 702 RSUs was reported on Form 4 filed on February 24, 2023. The 514 time-based RSUs are part of 2,056 time-based RSUs that have been reported as shares beneficially owned by the reporting person since initially reported on the reporting person's Form 4A on May 22, 2020.

F2 · balance_after: Includes 1,542 time-based RSUs granted under issuer's Long Term Incentive Plan. The RSUs vest in two installments: 514 shares on March 1, 2024, and 1,028 shares on March 1, 2025.

SEC source: 0001567619-23-004414 · doc1.xml · nonDerivative · entry 2

Rogers Melinda B. · CIK 0001748944 · VP, Chief HR & Diversity Off. · NW Natural

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 2,705.876

F3 · shares: Shares were withheld by the issuer to cover withholding taxes on issuance of performance shares. Organization and Executive Compensation Committee certification of the payout of these performance shares was reported on Form 4 filed February 24, 2023.

F2 · balance_after: Includes 1,953 time-based RSUs granted under issuer's Long Term Incentive Plan. The RSUs vest in three equal installments on each of March 1, 2024, 2025 and 2026.

SEC source: 0001567619-23-004414 · doc1.xml · nonDerivative · entry 1

Rogers Melinda B. · CIK 0001748944 · VP, Chief HR & Diversity Off. · NW Natural

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 2,795.876

F1 · shares: Shares were withheld by the issuer to cover withholding taxes on issuance of shares due to vesting of 61 restricted stock units (RSUs) with performance threshold and vesting of 651 time-based RSUs. Organization and Executive Compensation Committee certification of satisfaction of the performance threshold and vesting for the 61 RSUs was reported on Form 4 filed on February 24, 2023. The 651 time-based RSUs are part of 2,604 time-based RSUs that have been reported as shares beneficially owned by the reporting person since initially reported on the reporting person's Form 4 on February 25, 2022.

F2 · balance_after: Includes 1,953 time-based RSUs granted under issuer's Long Term Incentive Plan. The RSUs vest in three equal installments on each of March 1, 2024, 2025 and 2026.

SEC source: 0001567619-23-004410 · doc1.xml · nonDerivative · entry 1

Kravitz Zachary D · CIK 0001940844 · VP, Rates & Regulatory · NW Natural

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 1,325.213

F1 · shares: Shares were withheld by the issuer to cover withholding taxes on issuance of shares due to vesting of 71 restricted stock units (RSUs) with performance threshold and vesting of 104 time-based RSUs. Organization and Executive Compensation Committee certification of the satisfaction of the performance threshold and vesting for 71 RSUs was reported on Form 4 filed on February 24, 2023. The 104 time-based RSUs are part of 372 time-based RSUs that have been reported as shares beneficially owned by the reporting person since initially reported on the reporting person's Form 3 on August 4, 2022.

F2 · balance_after: Includes 268 time-based RSUs granted under issuer's Long Term Incentive Plan. The RSUs vest in three installments: 104 shares on each of March 1, 2024 and 2025 and 60 shares on March 1, 2026.

SEC source: 0001567619-23-004012 · doc1.xml · nonDerivative · entry 1

MCCURDY DAVID K · CIK 0001069010 · Director

10b5-1 filing: Not disclosed

Ownership: Indirect · See Footnote

Disclosed balance after: 2,730.333

F1 · ownership.nature: Shares have been credited to reporting person's account under issuer's Deferred Compensation Plan for Directors and Executives.

SEC source: 0001567619-23-004018 · doc1.xml · nonDerivative · entry 1

PARTAIN NATHAN I · CIK 0001180965 · Director

10b5-1 filing: Not disclosed

Ownership: Indirect · See Footnote

Disclosed balance after: 2,692.264

F1 · ownership.nature: Shares have been credited to reporting person's account under Issuer's Deferred Compensation Plan for Directors and Executives.

SEC source: 0001567619-23-004015 · doc1.xml · nonDerivative · entry 1

McDonough Sandra · CIK 0001901349 · Director

10b5-1 filing: Not disclosed

Ownership: Indirect · See Footnote

Disclosed balance after: 2,312.556

F1 · ownership.nature: Shares have been credited to reporting person's account under issuer's Deferred Compensation Plan for Directors and Executives.

SEC source: 0001567619-23-004010 · doc1.xml · nonDerivative · entry 1

Lee Karen · CIK 0001839510 · Director

10b5-1 filing: Not disclosed

Ownership: Indirect · See Footnote

Disclosed balance after: 5,904.473

F1 · ownership.nature: Shares have been credited to reporting person's account under Issuer's Deferred Compensation Plan for Directors and Executives.

SEC source: 0001567619-23-004008 · doc1.xml · nonDerivative · entry 1

Enand Monica · CIK 0001794296 · Director

10b5-1 filing: Not disclosed

Ownership: Indirect · See Footnote

Disclosed balance after: 9,329.942

F1 · ownership.nature: Shares have been credited to reporting person's account under Issuer's Deferred Compensation Plan for Directors and Executives.

SEC source: 0001567619-23-003745 · doc1.xml · nonDerivative · entry 2

DOWNING JAMES R · CIK 0001717381 · VP and CIO · NW Natural

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 8,023.569

F2 · shares: Shares are issuable as a result of satisfaction of performance goals for 2020-2022 under a performance share award. Organization and Executive Compensation Committee certification of the award payout level occurred on the transaction date.

SEC source: 0001567619-23-003745 · doc1.xml · nonDerivative · entry 1

DOWNING JAMES R · CIK 0001717381 · VP and CIO · NW Natural

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 7,116.569

F1 · shares: Shares are issuable as a result of satisfaction of the performance threshold for 2022 under restricted stock unit awards. Organization and Executive Compensation Committee certification of the satisfaction of the performance threshold occurred on the transaction date.

SEC source: 0001567619-23-003753 · doc1.xml · nonDerivative · entry 2

Palfreyman Justin · CIK 0001686243 · VP, Strategy & Bus Dev · NW Natural

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 10,782

F2 · shares: Shares are issuable as a result of satisfaction of performance goals for 2020-2022 under a performance share award. Organization and Executive Compensation Committee certification of the award payout level occurred on the transaction date.

SEC source: 0001567619-23-003753 · doc1.xml · nonDerivative · entry 1

Palfreyman Justin · CIK 0001686243 · VP, Strategy & Bus Dev · NW Natural

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 9,507

F1 · shares: Shares are issuable as a result of satisfaction of the performance threshold for 2022 under restricted stock unit awards. Organization and Executive Compensation Committee certification of the satisfaction of the performance threshold occurred on the transaction date.

SEC source: 0001567619-23-003759 · doc1.xml · nonDerivative · entry 4

Saathoff MardiLyn · CIK 0001445672 · SVP, General Counsel & Reg.

10b5-1 filing: Not disclosed

Ownership: Indirect · See Footnote

Disclosed balance after: 13,699.97

F4 · shares: Shares are issuable as a result of satisfaction of performance goals for 2020-2022 under a performance share award, and credited to reporting person's account under Northwest Natural Gas Company's Deferred Compensation Plan for Directors and Executives pursuant to a prior election. Organization and Executive Compensation Committee certification of the award payout level occurred on the transaction date.

F5 · ownership.nature: Shares have been credited to reporting person's account under Northwest Natural Gas Company's Deferred Compensation Plan for Directors and Executives.

SEC source: 0001567619-23-003759 · doc1.xml · nonDerivative · entry 3

Saathoff MardiLyn · CIK 0001445672 · SVP, General Counsel & Reg.

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 22,118.1235

F3 · shares: Shares are issuable as a result of satisfaction of performance goals for 2020-2022 under a performance share award. Organization and Executive Compensation Committee certification of the award payout level occurred on transaction date.

SEC source: 0001567619-23-003759 · doc1.xml · nonDerivative · entry 2

Saathoff MardiLyn · CIK 0001445672 · SVP, General Counsel & Reg.

10b5-1 filing: Not disclosed

Ownership: Indirect · See Footnote

Disclosed balance after: 11,659.97

F2 · shares: Shares are issuable as a result of satisfaction of the performance threshold for 2022 under restricted stock unit awards, and credited to reporting person's account under the issuer's Deferred Compensation Plan for Directors and Executives pursuant to a prior election. Organization and Executive Compensation Committee certification of the satisfaction of the performance threshold occurred on the transaction date.

F5 · ownership.nature: Shares have been credited to reporting person's account under Northwest Natural Gas Company's Deferred Compensation Plan for Directors and Executives.

SEC source: 0001567619-23-003759 · doc1.xml · nonDerivative · entry 1

Saathoff MardiLyn · CIK 0001445672 · SVP, General Counsel & Reg.

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 21,609.1235

F1 · shares: Shares are issuable as a result of satisfaction of the performance threshold for 2022 under restricted stock unit awards. Organization and Executive Compensation Committee certification of the satisfaction of the performance threshold occurred on the transaction date.

SEC source: 0001567619-23-003741 · doc1.xml · nonDerivative · entry 2

ANDERSON DAVID HUGO · CIK 0001241405 · Director · President & CEO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 144,182

F2 · shares: Shares are issuable as a result of satisfaction of performance goals for 2020-2022 under a performance share award. Organization and Executive Compensation Committee certification of the award payout level occurred on the transaction date.

SEC source: 0001567619-23-003741 · doc1.xml · nonDerivative · entry 1

ANDERSON DAVID HUGO · CIK 0001241405 · Director · President & CEO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 135,447

F1 · shares: Shares are issuable as a result of satisfaction of the performance threshold for 2022 under restricted stock unit awards. Organization and Executive Compensation Committee certification of the satisfaction of the performance threshold occurred on the transaction date.

SEC source: 0001567619-23-003761 · doc1.xml · nonDerivative · entry 2

Weber David A. · CIK 0001538965 · VP, Gas Supply · NW Natural

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 1,886.733

F2 · shares: Shares are issuable as a result of satisfaction of performance goals for 2020-2022 under a performance share award. Organization and Executive Compensation Committee certification of the award payout level occurred on the transaction date.

SEC source: 0001567619-23-003761 · doc1.xml · nonDerivative · entry 1

Weber David A. · CIK 0001538965 · VP, Gas Supply · NW Natural

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 979.733

F1 · shares: Shares are issuable as a result of satisfaction of the performance threshold for 2022 under restricted stock unit awards. Organization and Executive Compensation Committee certification of the satisfaction of the performance threshold occurred on the transaction date.

SEC source: 0001567619-23-003765 · doc1.xml · nonDerivative · entry 3

WILSON BRODY J · CIK 0001571275 · VP, Treas., CAO & Controller

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 7,895

F3 · shares: Shares are issuable as a result of satisfaction of performance goals for 2020-2022 under a performance share award. Organization and Executive Compensation Committee certification of the award payout level occurred on the transaction date.

SEC source: 0001567619-23-003765 · doc1.xml · nonDerivative · entry 2

WILSON BRODY J · CIK 0001571275 · VP, Treas., CAO & Controller

10b5-1 filing: Not disclosed

Ownership: Indirect · See Footnote

Disclosed balance after: 6,108.649

F2 · shares: Shares are issuable as a result of satisfaction of the performance threshold for 2022 under restricted stock unit awards, and credited to reporting person's account under Northwest Natural Gas Company's Deferred Compensation Plan for Directors and Executives pursuant to a prior election. Organization and Executive Compensation Committee certification of the satisfaction of the performance threshold occurred on the transaction date.

F4 · ownership.nature: Reflects shares that have been credited to reporting person's account under Northwest Natural Gas Company's Deferred Compensation Plan for Directors and Executives.

SEC source: 0001567619-23-003765 · doc1.xml · nonDerivative · entry 1

WILSON BRODY J · CIK 0001571275 · VP, Treas., CAO & Controller

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 6,988

F1 · shares: Shares are issuable as a result of satisfaction of the performance threshold for 2022 under restricted stock unit awards. Organization and Executive Compensation Committee certification of the satisfaction of the performance threshold occurred on the transaction date.

SEC source: 0001567619-23-003747 · doc1.xml · nonDerivative · entry 3

Filippi Shawn M · CIK 0001629792 · VP, CCO & Corporate Secretary

10b5-1 filing: Not disclosed

Ownership: Indirect · See Footnote

Disclosed balance after: 10,396.412

F3 · shares: Shares are issuable as a result of satisfaction of performance goals for 2020-2022 under a performance share award, and credited to reporting person's account under Northwest Natural Gas Company's Deferred Compensation Plan for Directors and Executives pursuant to a prior election. Organization and Executive Compensation Committee certification of the award payout level occurred on the transaction date.

F4 · ownership.nature: Shares have been credited to reporting person's account under Northwest Natural Gas Company's Deferred Compensation Plan for Directors and Executives.

SEC source: 0001567619-23-003747 · doc1.xml · nonDerivative · entry 2

Filippi Shawn M · CIK 0001629792 · VP, CCO & Corporate Secretary

10b5-1 filing: Not disclosed

Ownership: Indirect · See Footnote

Disclosed balance after: 9,669.412

F2 · shares: Shares are issuable as a result of satisfaction of the performance threshold for 2022 under restricted stock unit awards, and credited to reporting person's account under Northwest Natural Gas Company's Deferred Compensation Plan for Directors and Executives pursuant to a prior election. Organization and Executive Compensation Committee certification of the satisfaction of the performance threshold occurred on the transaction date.

F4 · ownership.nature: Shares have been credited to reporting person's account under Northwest Natural Gas Company's Deferred Compensation Plan for Directors and Executives.